GM HEI Weight and Spring Kit

The Kit comes with new advance weights, springs to set the rate of advance and new bushings.

Part #: 8428

Brand: MSD


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This kit will help you achieve the solid ignition timing you need!

This is designed for the Street Fire HEI and stock style HEI Distributors.

(Not for use with Billet and Pro-Billet MSD Distributors)

GM HEI Weight & Spring Kit

Part #: 8428